Site graphite ntụ ntụ, Kevlar eriri na pụrụ iche nrapado egwuregwu pụrụ iche, tinye kwekọrọ ekwekọ ọrụ mgbakwunye, ojiji nke na-edegharị usoro iwu.
Site na nrapado na-eguzogide okpomọkụ, asbestos-free okpomọkụ na-eguzogide eriri na inormeric okpomọkụ dị elu na-emekọ ihe ọnụ pụrụ iche, gbakwunye ihe mgbakwunye kemịkalụ kwekọrọ, ojiji nke iṅomi usoro iwu.
Aramid eriri, carbon eriri, fiberglass, wdg dị ka skeleton ihe, mmanụ na-eguzogide nrapado pụrụ iche imekọ ihe ọnụ, tinye kwekọrọ ekwekọ chemical mgbakwunye, fillers, ojiji nke ala nrụgide usoro iwu.
Site na butyl latex, eriri na-enweghị asbestos na ihe ndị na-arụ ọrụ na-arụkọ ọrụ ọnụ pụrụ iche, tinye mgbakwunye kemịkalụ kwekọrọ, ojiji nke usoro iwu na-edegharị.